Unit 3 Mini Practice Test

(3A) Which element has atoms that can form halide ions?

• iodine

• silver

• strontium

• xenon

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

(3A) Which two elements have the most similar chemical properties?

• Na and Mg

• O₂ and F₂

• B and Si

• C and Si

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(3B) Which period on the Periodic Table contains more metallic elements than nonmetallic elements?

• Period 1

• Period 2

• Period 3

• Period 4

(3B) Which element is an active nonmetal?

• neon

• zinc

• oxygen

• chromium

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NGSS.HS-PS1-1

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(3C) Which halogen is a solid at STP?

• fluorine

• Chlorine

• bromine

• iodine

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NGSS.MS-PS1-4

(3C) Which nonmetal at STP could the particle diagram shown represent?

• Phosphorus

• Carbon

• Oxygen

• Bromine

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NGSS.HS-PS1-1

(3D) Which general trend is found in Period 2 on the Periodic Table as the elements are considered in order of increasing atomic number?

• decreasing atomic mass

• decreasing electronegativity

• increasing atomic radius

• increasing first ionization energy

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NGSS.HS-PS1-1

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(3D) Which two characteristics are associated with metals?

• low first ionization energy and low electronegativity

• low first ionization energy and high electronegativity

• high first ionization energy and low electronegativity

• high first ionization energy and high electronegativity

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NGSS.HS-PS1-2

(3E) Which change occurs when an atom in an excited state returns to the ground state?

• Energy is emitted.

• Energy is absorbed.

• The number of electrons decreases.

• The number of electrons increases.

(3E) Write a possible excited state configuration for an atom of phosphorus.

(don't put spaces in your answer)

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